Improvement in the mode of hanging pitmen



UNITED STATES E. H. OBAIGE, OF BROOKLYN, -NEW YORK.

PATENT OFFICE. j

IMPROVEMENT IN THE MODE OF HANGING PITMEN, 80C.

Specification forming part of Letters Patent No. 57,292, dated August21, 1866.

To all whom t may concern Be it known that I, E. H. GRAIGE, of the cityof Brooklyn and county of Kings, State of New York, have invented a newand Improved Mode of Hanging Connecting, Pitman, and other Bods inMachinery; and I do hereby declare that the following is a full, clear,and exact description thereof, which will enable others skilled in theart to make and use the same.

The present invention relates more particularly to the manner of hangingthe connecting or pitnian rod to the treadle and cranksha-ft of asewing-machine, although it can be applied to many other and variouspurposes of a similar nature; and itconsists in .so forining the jointor hinge between the said rod and the treadle or crank-shaft, or both,as to greatly reduce the bearing-surfaces of the several parts, and thusobviate a considerable friction, and also to allow a lateral play orside motion to the rod without producing the least noise, while, at thesame time, a perfectly secure and reliable joint is obtained; and, also,in so connecting the said rod with the treadle or crank-shaft, or both,that the joint can be tightened at pleasure as it becomes worn from use,as will be obvious from the following detail description of myimprovements, reference being had to the accompanying plate of drawings,in which- Figure lis an elevation of the connecting or pitman rod,showing it hung at one end to a treadle and at its other to a shortspindle; and Fig. 2, a section taken through the pitman-rod in the planeof the line fr or, Fig. 1.

A in the drawings represents the pitinan or connecting rod, the lengthand size of which depend upon the machine in which it is to be used,this rod, at each end, B B2, being bent over, forming a semicircularbearing, C, which in the one case, B2, has an angular or V-shapedgroove, D, made in and entirely around it, and in the other case, B, asimilar V-shaped edge, E, corresponding to but the reverse of each ofwhich in shape is a V-edge or lip around and on the arm or shaft F,projecting from and fixed to the inner end of the treadle foot or plateGr, and a V-groove upon the short spindle or shaft H, vto which theopposite end of the connecting-rod A is hung,

the bearings of both of these shafts F and H in their respective ends ofthe said pitman-rod A being completed by the pieces or bars I I, securedto the sides of the said rod A at the proper points thereof, andproperly shaped at their ends J J, which bear against the said shafts Fand H. These bars I I are both secured to the connecting-rod A byset-screws K, one to each bar, passing through short slotsL of the same,extending in the direction of their length and screwing on the rod A, byloosening which screws K, and then turning the screws M, bearing againstthe beveled or inclined ends N N of the said bars I in the properdirection to force or move the said bars forward upon the connecting-rodA, their bearings can be tightened to any degree desired about thetreadle shaft or arm Fand spindle'H, and when tightening the set-screwsthey can be se! cured at such position.

From the above it is obvious that by hanging the connecting` or pitmanrod A in the manner described its bearing-surfaces are much reduced,consequently obviating a considerable amount of friction, and that,furthermore, the said rod can have a lateral or side play or motionwithout producing the .least noise or rattle, as is the case with themode now employed for hanging the said rod, and that by forming oneportion of the bearings at each end of the rod A with the adjustablesliding bars I the wearing away of the bearings from use can becompensated for by properly setting up the said bars.

I claim as new and desire to secure by Letters Patent- 1. Forming thebearings or journals of connecting or other rods in machinery of a V orother equivalent shape thereto, substantially as herein described, forthe purposes specified.

2. The adjustable slides or bars I, constituting a portion of thebearings or journals of connecting and other rods in machinery,

when arranged upon'the said rods so as to beV susceptible of adjustment,substantially as and for the purposes described.

E. H. CRAIGE.

Witnesses:

WM. F. MGNAMARA, ALBERT W. BROWN.

